/Engine/Source/Runtime/Engine/Classes/Debug/ReporterBase.h
Helper to draw a triangle from normalized to screen space
void DrawTriangle ( [UCanvas](API\Runtime\Engine\Engine\UCanvas) * Canvas, const FVector2D & Vertex1, const FVector2D & Vertex2, const FVector2D & Vertex3, const [FLinearColor](API\Runtime\Core\Math\FLinearColor) & Color )